Inventor
Charles F. Blair
Inventor
Powell, OH, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Jprimary
H02JElectric power networks55%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems18%
G01RMeasuring electric variables9%
H02HEmergency protective circuit arrangements9%
Y10TTechnical subjects covered by former us classification9%
PatentTitleYear
10,523,031Method and device for controlling two-wire discharge circuit of battery201910,439,431Method to reduce inrush currents in a transformer-less rectifier uninterruptible power supply system201910,404,094System and method for power sharing in a multiple UPS system201910,340,7333-wire transformer-free UPS system and method of control to reduce common mode current20199,915,687'Real current meter'20187,453,235'Modular uninterruptible power supply'20086,700,351'Modular uninterruptible power supply battery management'2004Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2004–2019Patents assigned to LIEBERT CORP (6)· patent assignee history
2004–2019Based in Powell, OH, US· patent location history
2019Patents assigned to VERTIV CORP (4)· patent assignee history
2019Based in Guangdong, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LIEBERT CORP | 6 | 2004–2019 |
| VERTIV CORP | 4 | 2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Powell, OH, US | 6 | 2004–2019 |
| Guangdong, CN | 1 | 2019 |